Finite element simulation of high speed machining of Ti6Al4V alloy and the corresponding experimental study

摘要

Finite element simulations of high speed machining of Ti6Al4V alloy were carried out based on Abaqus. The Johnson-Cook constitutive model was chosen for the titanium alloy Ti6Al4V, the parameters of the constitutive model were obtained through the SHPB (Split Hopkinson Pressure Bar) experiment. The similarity of the chips obtained from the simulations and that from the experiments indicated that the parameters of the constitutive model for titanium alloy Ti6Al4V were reliable. Different cutting parameters and different tool geometric parameters were applied in the simulations to find out their effects to the simulation results. Comparisons were made between the results obtained from the simulations and that from the experiments, a good agreement between them indicated that the finite element simulation of high speed machining of Ti6Al4V in this paper is reliable. It can be concluded that the finite element simulations of high speed machining can be widely used in practice to help the researchers to study more about the machining process and reduce the experimental expenses.